Infrequently seen WWE Superstar Christian celebrates a milestone birthday Saturday as he turns 40-years-old. The six-time world champion was sidelined in August due to a concussion, which according to this week's issue of the Wrestling Observer Newsletter, he has yet to fully recover from. However, he is expected to return to action in early December.

Christian is the sixth wrestler to join "The 40 Club" since the beginning of 2012, boosting the WWE main roster total to twelve. The complete list is as follows: